ASN.1/Rust Web Compiler

Features	Full Codec with Validation	Compact Codec
ASN.1 Features Support	Complete	Few Restrictions i No support for CHARACTER STRING, EMBEDDED-PDV, EXTERNAL, INSTANCE OF, and the TIME type and its subtypes.
Detailed errors	✓ i Multiple errors, including the position of the field. E.g. Error 80002: The end of the encoding was encountered inside the content; check the content (INTEGER type 'I') of field 'cc' (OCTET STRING type 'OI') of PDU (SEQUENCE type 'CC-INT')	✗ i Single error with an error code and a short description. E.g. Error 401: The input value is invalid and cannot be encoded
Binary Encoding Rules	all	all
Text Encoding Rules	JER (JSON)	✗
CHOICE type with untagged alternatives	✓	✗
SEQUENCE/SET with a complex DEFAULT	✓	✗ i Such DEFAULTs are not ignored, the user must take responsibility to ensure that no values matching the defaults will be presented to the Encode function of the canonical encoding rules, otherwise this may result in non-canonical encodings.
Recursive type definition in schemas	✓	✓
Automatic encoding/decoding of OCTET STRING and BIT STRING with a contents constraint	✓	✓
Automatic decoding constrained open types	✓	✓ i Limited to only one referenced component of the same SEQUENCE or SET type and the reference is INTEGER or OBJECT IDENTIFIER.
Validation of an ASN.1 value	✓	✗
Copying, comparison of ASN.1 values	✓	✗
Get PDU id by type name	✓	✗

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questionnaire One minute

ASN.1 Schema:

General options

Codec choice: ⓘ

Allow encoding of complex DEFAULTs Ignore complex DEFAULTs (for types other than NULL, BOOLEAN, ENUMERATED, INTEGER and BIT STRING) during encoding. Warning: for canonical ER, it might produce non-conformant encodings, as complex DEFAULT values will still be encoded.

Always decode the Open Types Decode Open Types even when their IDs are nested at a different level. Otherwise Open Types can be decoded in a separate step.

Encoding rule: Text and binary formats, where OER is faster, PER is smaller, JER is human readable, etc.

Code generation

Generate sample

Include types:

Space-delimited list (TypeName or Module.Type or *.Type). Leave blank to include all. Sample uses the first type only.

Generate functions:

Advanced options

Code footprint reduction

Exclude types: List of space-delimited type names (TypeName or ModuleName.TypeName or *.TypeName) for optional components of a SEQUENCE or alternatives of a CHOICE that are not expected to be present in a message and can be excluded from the generated code.

Allow ToString (helper API) Allows serializing data objects as JSON strings. Required when 'Generate sample' is checked.

Output